Set time limits and allow for breaks.
设置时间限制并安排间歇性休息。
Set time limits for your Internet use.
为你的上网时间设定限制。
Performance: The catalog service needs to perform within certain time limits.
性能：Catalog服务需要在一定时间限制内完成操作。
给任务设定时限。
有时间限制。
It's natural that some friendships have time limits.
有的友情随时光的流逝而消失是情理之中的事。
You can use free of charge, without any functional restrictions and time limits.
您可以免费使用，无任何功能限制和时间限制。
However, I began setting time-limits for myself.
不过，我开始为自己定了时间限制。
However, I began setting time-limits for myself.
不过，我开始为自己定了时间限制。
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